Q.68. Which statements are True? A. In Hoffmann bromamide degradation, 4 moles of NaOH and 2 moles o

Q: What is the correct answer for JEE Main Chemistry Q68?

The correct answer is C. The Hoffmann bromamide degradation reaction is: $RCONH_2 + Br_2 + 4NaOH \rightarrow RNH_2 + Na_2CO_3 + 2NaBr + 2H_2O$. A. From the balanced equation, 4 moles of NaOH and 1 mole of Br₂ are consumed per mole of amide. So, statement A is false. B. Hoffmann bromamide degradation is a method for preparing primary amines from amides. Alkyl amides (e.g., $CH_3CONH_2$) readily undergo this reaction. So, s

Q: Q.68. Which statements are True? A. In Hoffmann bromamide degradation, 4 moles of NaOH and 2 moles of Br₂ are consumed per mole of an amide B. Hoffmann bromamide reaction is not given by alkyl…

The correct answer is C. The Hoffmann bromamide degradation reaction is: $RCONH_2 + Br_2 + 4NaOH \rightarrow RNH_2 + Na_2CO_3 + 2NaBr + 2H_2O$. A. From the balanced equation, 4 moles of NaOH and 1 mole of Br₂ are consumed per mole of amide. So, statement A is false. B. Hoffmann bromamide degradation is a method for preparing primary amines from amides. Alkyl amides (e.g., $CH_3CONH_2$) readily undergo this reaction. So, s

Q: What are the options for this JEE Main Chemistry question?

A. A, C and E only · B. B, C and D only · C. C and E only · D. C, D and E only

Question

Q.68. Which statements are True? A. In Hoffmann bromamide degradation, 4 moles of NaOH and 2 moles of Br₂ are consumed per mole of an amide B. Hoffmann bromamide reaction is not given by alkyl amides. C. Primary amines can be synthesized by Hoffmann bromamide degradation. D. Secondary amide on reaction with Br₂ and NaOH will give secondary amine. E. The by-products of Hoffmann degradation are Na₂CO₃, NaBr and H₂O. Choose the correct answer from the options given below:

FirstInTest · Accepted Answer

The Hoffmann bromamide degradation reaction is: $RCONH_2 + Br_2 + 4NaOH \rightarrow RNH_2 + Na_2CO_3 + 2NaBr + 2H_2O$. A. From the balanced equation, 4 moles of NaOH and 1 mole of Br₂ are consumed per mole of amide. So, statement A is false. B. Hoffmann bromamide degradation is a method for preparing primary amines from amides. Alkyl amides (e.g., $CH_3CONH_2$) readily undergo this reaction. So, statement B is false. C. The reaction converts an amide to a primary amine with one less carbon atom. So, primary amines can be synthesized by this method. Statement C is true. D. Secondary amides ($RCONHR'$) do not undergo Hoffmann bromamide degradation to form amines. They might react with $Br_2$ and $NaOH$ but will not yield a secondary amine via the degradation pathway. So, statement D is false. E. From the balanced equation, the by-products are $Na_2CO_3$, $NaBr$, and $H_2O$. So, statement E is true. Therefore, statements C and E are true.

Answer

A, C and E only

Answer

B, C and D only

Answer

C and E only

Answer

C, D and E only

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